Cellulosic composition of matter containing piperidine



Patented OctQ 5,1931

PATENTEOFFICE"' Q 'rrrorri 's r. nivnevalnzrlsrnun, or no(nrIas'rr-R, NEW YORK, ASSIGNOBS ro EASTMAN nonnxoo vrrmvr, or ROCHESTERLN'EW-YORK, A conronnrron or" I :uEw Yon;

'crinmmosniyooivrrosrrroii MATTER coifvranvmosr rnmnnvn No piawing;

invention relates to compositions of matters in which cellulose derivatives, such as cellulose acetate, cellulose nitrate,0r celluloseether, -farecombined or mixed with other substances, such 'jas a compatible plasticizer,

' fanda-commo'nsolventiforboth, with or with- "outiother :useful addition agents, so that the "resulting product will have propertiesv such as will.make the. compositionj'highly advano 'tageous for, use in the plastic; and analogous arts, sufch, fori instance, as themanufacture of wrapping sheets,jjphotographic film, arti-x I ficial silk, varnishes pr; lacquers,,fand the, like.

flexible sheets; or films of desired vthinness which are substantially waterproof, are unaffected ibyliordinaryjphotographic fluids and possess the *desirediproperties of asupport for:fsensitive photographic coatings. An-

other object-f;our'invention is to produce a composition whichis'capable of easyand convenient: manipulation in the plastic and analogous arts, such as m the manufacture known that to utilize-them in the "various plastic arts it is necessary to mix therewith such plasticizing 01'" conditioning agents as camphor, castor oil, triphenyl phosphate,

of theseand other'addition agents are also 'addedffor thepurpose of reducing the inflammability of the product. Plastic induci'ing'agents, such as the higher alcohols and i their esters, are sometimes also added. Sim,-

"ilarly,"additioncompounds of various kinds have been employed to increase flexibility,"

' V gtransparency, toughness, and other properties I :"which'will enhance the value of the resulting. product. Addition products for the same or:

2'5 One obj ect, of this ,-1-nvention isf to produce a composition of matter which may be made into permanentlytransparent,- "strong and agents a matter of considerable importance as ;-,plas ticiz'ing ,compoundjpiperidine together :wlth' a ,solvent, such as acetone," which of sheets, films, artificialfsilk filaments, vari in have been knoWnfor decadesit has alsobeen' acetate/in thielpercentwages hereinafter e monochlornaphthalene or the like. Certain Application fil ed September 12, 1930, Serial 110,481,583.

similarpurposes are also added to cellulose acetates, nitratesa'nd ethers to prepare them for use in theother plastic arts, such as in the manufacture-of; lacquers, varnishes, artificial Sllk filaments, moulded compounds and the '7 like. :While the plasticizers or other addition agents heretofore discovered have had their utility in the art, the increasing use to which cellulose; derivatives haVebeen put and the increasing number of desirable properties re- 60 qulredrof the cellulose derivative for most purposes has made the discovery of new and economical plasticizers or other addition c We have "discovered that valuable "properties may be induced in and /or contributed to compositions containing cellulose. derivatives, such-"as celluloseacetate, by' adding thereto will dissolve both the-cellulose derivative and plast c zer This plastivci'zer has the structural' formula o i state,, ,byway of 'illustrationythat for the manufacture of photographicfilm or othe r .sheets' our new composition of matter may be compounded as follows :QlOO parts of acetone soluble "cellulose acetate i. ei cellulose acetate containing from"38% to 42% ac'etyl radical,

approximately, dissolved with 'stirring at 10c 

